Power conversion efficiency improvement device of inverter compressor

Abstract

The invention provides a power conversion efficiency improvement device of an inverter compressor. The power conversion efficiency improvement device comprises a power supply, a detection circuit, a protection circuit, a single-chip microcomputer, a drive control circuit and a three-phase inverter circuit. The detection circuit is connected with the three-phase inverter circuit to collect the current and voltage of the three-phase inverter circuit, and is connected with the single-chip microcomputer through the protection circuit. The output end of the single-chip microcomputer is connected with the drive control circuit. The output end of the drive control circuit is connected with the three-phase inverter circuit. The output end of the three-phase inverter circuit is connected with a load. An intelligent power module is adopted, and the power conversion efficiency improvement device is high in integration level and low in cost and is directly integrated on a main control panel; and the energy consumption control efficiency is greatly increased by 30%, and the power conversion efficiency improvement device accords with the current development direction of power devices.

Description

technical field [0001] The invention relates to the field of frequency conversion compressors, in particular to a power conversion and efficiency enhancement device of a frequency conversion compressor. Background technique [0002] The compressor is the key component of home appliances such as air conditioners and refrigerators, and it is also the component that consumes the most energy. The power conversion efficiency of the compressor directly determines the power consumption. The variable frequency compressor has achieved a major surpassing the efficiency of the fixed frequency compressor, but the problem of energy consumption is still high. The power conversion module of the inverter compressor is the key point to achieve good control. How to improve the processing capacity of the power conversion module has been stagnant in the industry. [0003] In the existing compressor power conversion module, due to the overheating of the main control board, the inverter is abnor...

AI Technical Summary

Problems solved by technology

[0003] In the existing compressor power conversion module, because the main control board is overheated, the frequency converter is abnormal, causing the power loss of the compressor to reach 10%-20%, which eventually leads to high frequency of control circuit failures, low power conversion efficiency, complex structure, and high failure rate , and the existing compressor power conversion module generally adopts the PWM control method, so that the compressor speed is limited by the upper limit speed, generally not exceeding 7000 rpm, and the energy consumption control accuracy is not enough

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